IDTF0480NBGI
Datasheet
Matched Broadband RF VGA
400MHz to 2700MHz
G
ENERAL
D
ESCRIPTION
This document describes the specifications for the
IDTF0480 400 MHz to 2700 MHz RF Digital Variable Gain
Amplifier used in receiver, transmitter and other
applications.
IDTF0480 RF DVGA provides 13 dB typical maximum
gain (no attenuation) with 4 dB noise figure and 23 dB
gain adjustment in 1 dB steps designed to operate
with a single 5 V supply. Nominally, the device offers
+41 dBm output IP3 using 100 mA of I
CC
.
This device is packaged in a 5x5 32-pin thin QFN with
50 ohm single-ended RF input and RF output
impedances for ease of integration into the signal-path
lineup.
F
EATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
400 MHz – 2700 MHz
< 1 dB overshoot between gain transitions
13 dB typical max gain
23 dB gain range, 1 dB gain step resolution
Excellent linearity +41 dBm OIP3
Noise Figure 4 dB
I
CC
= 100 mA
1.3 mA standby current
SPI interface
50 input and output impedance
Broadband, Internally Matched
Gain increases vs. frequency to counteract
system board losses
5x5 32-pin TQFN package
C
OMPETITIVE
A
DVANTAGE
In many applications, digital step attenuators followed
by RF amplifiers are used in the Receive path. The
IDTF0480 RF DVGA provides very high reliability by
combining a silicon Glitch-Free
TM
DSA & a Zero-
Distortion
TM
RF amplifier in a single, compact QFN
package. Utilizing IDT’s technology, the resultant RF
VGA provides +41 dBm OIP3 performance across a very
wide bandwidth of 400 MHz to 2700 MHz at
approximately 100 mA of current. Furthermore the
device is internally matched so there is no need to
optimize external matching elements.
D
EVICE
B
LOCK
D
IAGRAM
TM
Zero-Distortion
TM
TM
Glitch-Free
TM
A
PPLICATIONS
•
•
•
•
•
•
•
•
•
•
•
•
•
Multi-mode, Multi-carrier Receivers
PCS1900 Base Stations
DCS1800 Base Stations
WiMAX and LTE Base Stations
UMTS/WCDMA 3G Base Stations
PHS/PAS Base Stations
Point to Point Infrastructure
Public Safety Infrastructure
Broadband Repeaters
GPS Receivers
Distributed Antenna Systems
Cable Infrastructure
Digital Radio
O
RDERING
I
NFORMATION
Omit IDT
prefix
0.75 mm height Tape &
Reel
package
IDTF0480NBGI8
RF product Line
Green
Glitch-Free , Zero-Distortion , RF VGA
TM
TM
1
Rev 3, April 2015
IDTF0480NBGI
Datasheet
Matched Broadband RF VGA
400MHz to 2700MHz
A
BSOLUTE
M
AXIMUM
R
ATINGS
Parameter
VCC to GND
SPI DATA, SPI CSb, SPI CLK, LogicCTL
STBY, Band_Select
R_Bias1
R_Bias2
RFIN externally applied DC voltage
RFOUT externally applied DC voltage
RF Input Power (RFIN) applied for 24
hours maximum
Continuous Power Dissipation
Junction Temperature
Storage Temperature Range
Lead Temperature (soldering, 10s)
ElectroStatic Discharge – HBM
(JEDEC/ESDA JS-001-2012)
ElectroStatic Discharge – CDM
(JEDEC 22-C101F)
Symbol
V
CC
V
diD
V
Cntl
I
R1
I
R1
V
RFin
V
RFout
P
in
P
diss
T
j
T
st
Min
-0.3
-0.3
-0.3
Max
+5.5
+3.6
V
cc
+ 0.25
+1.5
+0.8
Units
V
V
V
mA
mA
V
V
dBm
W
°C
°C
°C
+1.4
V
cc
- 0.15
+3.6
V
cc
+ 0.15
+22
1.5
150
-65
150
260
Class 2
(2000 V)
Class C2
(500 V)
Stresses above those listed above may cause permanent damage to the device. Functional operation of the device at
these or any other conditions above those indicated in the operational section of this specification is not implied.
Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
P
ACKAGE
T
HERMAL AND
M
OISTURE
C
HARACTERISTICS
θ
JA
(Junction – Ambient)
θ
JC
(Junction – Case) The Case is defined as the exposed paddle
Moisture Sensitivity Rating (Per J-STD-020)
40 °C/W
4 °C/W
MSL1
Glitch-Free , Zero-Distortion , RF VGA
TM
TM
2
Rev 3, April 2015
IDTF0480NBGI
Datasheet
Matched Broadband RF VGA
400MHz to 2700MHz
IDTF0480 R
ECOMMENDED
O
PERATING
C
ONDITIONS
Parameter
Supply Voltage(s)
Operating Temperature
Range
RF Freq Range
RF Source Impedance
RF Load Impedance
Symbo
l
V
CC
T
CASE
F
RF
Z
RFI
Z
RFO
Conditions
All VCC pins
Case Temperature
Operating Range
Single Ended
Single Ended
Min
4.75
-40
400
Typ
Max
5.25
+105
2700
Unit
s
V
°C
MHz
50
50
Glitch-Free , Zero-Distortion , RF VGA
TM
TM
3
Rev 3, April 2015
IDTF0480NBGI
Datasheet
Matched Broadband RF VGA
400MHz to 2700MHz
IDTF0480 S
PECIFICATION
See F0480 Typical Application Circuit. Specifications apply when operated as an RF DVGA, V
CC
= +5.00 V,
T
C
= +25 °C, Max gain setting, output power = 0 dBm, Z
RFI
= Z
RFO
= 50
Ω,
unless otherwise noted.
Parameter
Logic Input High
Logic Input Low
Logic Input High
Logic Input Low
Logic Current
Symbol
V
IH
V
IL
V
IH
V
IL
I
IH,
I
IL
Conditions
JEDEC 3.3V logic
JEDEC 3.3V logic
JEDEC 1.8V logic
JEDEC 1.8V logic
STBY, Band_Select
SPI_
Logic CTL
Low Band Configuration
Mid Band Configuration
High Band Configuration
Standby Mode
50% of STBY going low to
Gain within ± 1 dB with no
attenuation.
Min
2.0
1
Typ
Max
0.8
Units
V
V
V
V
µA
1.1
-10
-4
-35
100
117
109
1.3
250
23
1
0.63
+10
+4
+35
128
1.7
I
CC_LB
Supply Current
3
I
CC_MB
I
CC_HB
I
CC_STBY
Startup time
Gain adjustment range
Gain step
Max Attenuator Glitch
Gain Settling Time
Serial Clock Speed
CSb to first serial clock
rising edge
Serial Data Hold Time
Final serial clock rising
edge to CSb
A
G
ADJ
G
STEP
ATTN
G
G
ST
mA
ns
dB
dB
dB
ns
Step from 15 to 16 dB or 16 to
15 dB
50% of CSb to ± 0.1 dB of
settled gain
SPI 3 wire Bus. 50% of CSb
falling edge to 50% of CLK
rising edge.
SPI 3 wire Bus. 50% of CLK
rising edge to 50% of Data
falling edge.
SPI 3 wire Bus. 50% of CLK
rising edge to 50% of CSB
rising edge.
0.5
500
10
10
MHz
ns
B
10
ns
C
10
ns
Note 1: Items in min/max columns in
bold italics
are Guaranteed by Test.
Note 2: Items in min/max columns that are not bold/italics are Guaranteed by Design Characterization.
Note 3: During standby mode, SPI is to be left ON and previous state shall be maintained when device is powered up.
Glitch-Free , Zero-Distortion , RF VGA
TM
TM
4
Rev 3, April 2015
IDTF0480NBGI
Datasheet
Matched Broadband RF VGA
400MHz to 2700MHz
IDTF0480 S
PECIFICATION
- L
OWBAND
P
ERFORMANCE
See F0480 Typical Application Circuit. Specifications apply when operated as an RF DVGA, V
CC
= +5.00 V,
T
C
= +25 °C, F
RF
= 900 MHz, Band_Select = LB setting, Max gain setting, output power = 0 dBm,
Z
RFI
= Z
RFO
= 50
Ω,
the evaluation board and connector losses are de-embedded, unless otherwise noted.
Parameter
RF input return loss
RF output return loss
Symbol
RL
IN_LB
RL
Out_LB
G
MAX_LB
G
MIN_LB
Conditions
Min
Typ
15
20
Max
Units
dB
dB
Maximum attenuation
Variation over Temperature
Max gain variation over
frequency
5
Between adjacent states
Relative to maximum gain
Between adjacent states at
maximum gain
T
case
= +105 °C
22 dB attenuation
Pout = 0 dBm/Tone,
1 MHz tone separation
Pout = -10 dBm/Tone,
1 MHz tone separation
Pout = 0 dBm/Tone,
1 MHz tone separation, Worst
case in the operating
temperature range
Pout = 0 dBm/Tone,
1 MHz tone separation with
6 dB attenuation
11.5
-11.2
12.6
-10.2
± 0.3
0.1
± 0.1
± 0.2
1
3.9
4.8
25.9
41.5
40.5
13.4
-9.4
dB
Gain
G
TEMP_LB
G
VAR_LB
Step Error
Absolute Error
Phase deviation
G
ACC_LB
G
ABSACC_LB
G
PH_ADJ_LB
NF
LB
dB
dB
Deg
Noise Figure
NF
LB_MG
NF
LB_RG
OIP3
_LB-1
OIP3
_LB-2
dB
Output Third Order
Intercept Point
OIP3
_LB-3
39
41
dBm
OIP3
_LB-6dB
Output 1 dB Power
Compression
Output 0.2 dB Power
Compression
Output Saturated Power
Reverse Isolation
OP1dB
_LB
OP0.2dB
_LB
PSAT
_LB
REV
ISO_LB
41
20.6
22.2
20
dBm
dBm
dBm
dB
3 dB compression
22.3
18
Note 5: Including frequency and ripple variations valid within each individual 3GPP band.
Glitch-Free , Zero-Distortion , RF VGA
TM
TM
5
Rev 3, April 2015
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